Wanda Hears the Stars: A Blind Astronomer Listens to the Universe
By Amy S. Hansen with Wanda Daíz Merced
Illustrated by Rocío Arreola Mendoza
Charlesbridge
August 19, 2025
Ages 6-9

Once Wanda found the stars, they’re all she ever wanted. Despite childhood diabetes and antipathy toward school, curious and strong-willed Wanda set her sights on college to study astronomy. But when diabetes took her sight, she needed coping mechanisms and creative thinking to continue pursuing her goals. With the aid of recorded radio waves—sonification—Wanda was able to “hear a path to the sky” and continue to explore the stars in new and exciting ways.

In this picture book biography, Amy Hansen follows the story of her friend, colleague, and co-author Wanda Daíz Merced from a childhood in Puerto Rico to a career researching and teaching around the world. The thoughtful text focuses on Daíz Merced’s determination and her doubts, allowing readers to see her vulnerability and witness her triumph in overcoming obstacles like wayfinding in a new place or proving her methods to the scientific community. Spanish quotations, vocabulary, and translations are cleverly woven through the text, especially during scenes set in Puerto Rico, bringing her heritage to vivid life. The lush digital illustrations, in a saturated, blue-dominated color scheme, feature a fluid combination of diverse people and sound-images with cosmic flourishes to complement the astral theme and role of sound in her life. A combination of small vignettes and double-page spreads lets the reader into both intimate moments and large-scale events in her life. Robust backmatter includes a glossary and Spanish translations, author and scientific notes, and extensive lists of sources and resources. As an advocate for STEM education and disability inclusion, Wanda Daíz Merced serves as a champion for diversity in the sciences, while her adaptability and perseverance make her a powerful role model for everyone.